Sound-reproducer.



No. 646,370. Patented Mar. 27, I900.

I F. w. NOLTE. 'so'unn nsmuuucsn.

-App1-ication filed Feb. 20, 10991) 2 Shoots-Sheet 2,

(No Model.)

W/TNESSES w: mums PETERS cu mmauwmwunmomu. u a v NITED STATES PATENTFries,

FREDERICK W. NOLTE, OF VICTORIA, BRITISH COLUMBIA, CANADA.

SOUND-REPRODUCER.

SPECIFICATION forming part of LettersPatent No. 646,370, dated March 27,1900.

' Application filed February 20, 1899. Serial No- 706,193. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK W. NOLTE, a citizen of the United States,residingin Victoria, in the Province of British Columbia and Dominion ofCanada, have invented a new and Improved Sound-Reproducer, of which thefollowing is a full, clear, and exact description.

The purpose of this invention is to provide for phonographs,graphophones, and like instruments in which a gravity-reproducer is useda reproducer by, meansof which the sound-waves maybe taken from eachside of the diaphragm in contradistinction to takingv ophone in outlineand illustrating my invention in section, the parts being-adjusted to beout of active position. Fig. 2 is a plan 'view showing the horn-holder;and Fig. 3 is a view similar to Fig. 1, except that the parts are shownin operative position.

The casing 3 of the reprod ucer contains the usual diaphragm 4. To thisdiaphragm a head 5 is attached, and this head'in turn is connected witha wire 6, which passes through an opening in the bottom ofthe casing 3,and also transversely through a tube 7, which leads the sound-waves fromthe bottom of the diaphragm. The wire 6 is in connection with the freeend of the reproducing-lever 8, the

point of which bears on the cylinder of the graphophone, as usual. Thetube 7 is mounted to swing on and communicate with the box 9 of thecarriage of the apparatus, which is mounted to move along the shaft 10,all of which is in common usein the art. The box 9 is in communicationwith a horn 11, which horn serves to radiate the sound-waves which passfrom the bottom of the diaphragm through the tube 7 to the box 9.Ahorn-holding plate or support 12 is provided with an opening 14,fitting around the box 9 in the manner shown. The plate 12 has aset-screw 15, whereby to fasten the plate rigidly to the box. This plate12 projects transversely over the casing 3 and is formed with an opening16, (see Fig. 2,) which is surrounded by a perpendicularly-extendingtube 17, fastened rigidly to the plate 12 and serving to carry the horn18, which serves to radiate the sound- Waves from the upper side of thediaphragm 4. The plate 12 is provided with two openings 19,located,respectively,on opposite sides of the tube 17. Through theseopenings 19 are passed pins 20, which are in connection with anexpansive spiral spring 21, hearing on the plate 12 and surrounding thetube 17. Located on the underside of the plate 12 and attached to thepins 20-is a flat ring 22, which by means of the spring 21 is drawnintoclose contact-with the under side of the plate 12.

Fastened in the casing 3 and over the diaphragm 4 is a circular plate23, which has a central opening therein surrounded by an up-Wardly-extended tube 21. This tube 24: projects through ring 22 and theopening 16 in the plate 12 and upward into the tube 17, so that thesound-waves radiating from the upper side of the diaphragm may pass outthrough the tube 24 into the horn 18. The ring 22, fitting snugly aroundthe tube 24, serves. to prevent the escape of sound-waves between thetubes 17 and 24:. At the same time the spring-mounting of the ring 22allows the tube 2i free movement in a manner to be fully describedhereinafter. Screwing into the upper side of the casing 3 is a ringnut25, which bears down on the plate 23 to hold the same rigidly in place,the diaphragm being sustained between two gaskets or spacing-rings 4, sothat the diaphragm is held out of contact with the bottom of thecasing 3and with the plate 23, whereby to permit unrestrained vibration of thediaphragm. The plate 12 carries a swinging clamping-arm 26, which armserves to engage the under side of the casing 3 to hold the casingraised against the plate 12 when the apparatus is not in use, as shownin Fig. 1.

The plate 12 being rigidly fastened on the box 9 of the carriage of theapparatus and supporting the horn 18 when the reproducer is not in use,the tube 7, with the casing 3 and the attached parts, should be moved upto the position shown in Fig. 1 and-held in such position by the clamp26, engaged with the parts 3 and 12, as shown. This raisesthe stylusfrom the record, as the view illustrates.

- hen it is desired to use the reproducer, the

clamp 26 should be released, thus permitting the tube 7, with itsattached parts, to drop and bear the stylus on the record, the stylusbeing pressed on the record by the whole weight of the casing 3 and thetube 7 and parts carried thereby. The diaphragm 4 being vibrated, thesound-waves will pass from each side of the diaphragm through the tubes7 and 24, respectively. The ring 22, being very delicately sustained bythe spring 21, does not in any Way interfere with the free movement ofthe tube 24, which freedom of movement is necessary to the tube and thecasing 3 thus to permit the proper action of the stylus on the record.After the operation has been completed the tube 7, with the attachedcasing, should again be raised to the position shown in Fig. 1 and heldthere by the clamp 26.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent--, 1

1. The combination with a talking-m achine or like instrument, comprising a carriage and a tube mounted to swing thereon and communicatingtherewith, of a support rigidly attached to the carriage, a horn carriedby the support,a casing held by the tube, and moving with the same, adiaphragm mounted in the casing, a reproducing-lever supported by thetube and having connection with the diaphragm at one side thereof, thetube conducting sound-waves from the said side of the diaphragm, aclosure for the casing at the other side of the diaphragm, a tubesupported by said closure and leading to the horn of the support toconduct the sound-waves from the other side of the diaphragm, and aclamp for joining the casing and support.

2. Thecombinatiomwithatalking-machine or like instrument, comprising acarriage and a tube mounted to swing thereon and cornmunicatingtherewith, of a casing attached to the tube and communicating therewith,a diaphragm mounted in the casing, the tube conducting the sound-wavesfrom one side of the diaphragm, a reproducing-lever mounted on the tubeand having connection with the diaphragm at the side adjacent to thetube, a closure for the casing at the other side of the diaphragm, atube carried by the closure and leading the sound-waves from the otherside of the diaphragm, a support mounted on the carriage, a horn held bythe support, a ring sustained on the support encircling the tube of theclosure, the said tube of the closure communicating with the horn of thesupport, and a clamp for joining the casing and support. A

3. A talking-machine or like instrument, having a carriage supporting ahorn and a tube mounted to swing on the carriage, the tube leading tothe horn, a casing mounted on the tube, a diaphragm mounted in thecasing, the tube conducting the sound-waves from one side of thediaphragm, astylussupported by the tube and having connection with thediaphragm, a closure for the casing at the side opposite the tube, atube carried by the closure and conducting the soundwaves from the sideof the diaphragm opposite the first-named tube, asupport mounted on thecarriage and overhanging the casing, and means carried by the supportand communicating with the closure-tube for conducting the sound-wavesfrom said tube.

at. A talking-machine having a carriage, means for conducting thesound-waves, such means being supported by the carriage, a tube mountedto swing on the carriage and communicating with said means, a supportmounted on the carriage, a second means for conducting the sound waves,such second means being carried by the support, a casing mounted on thetube, a diaphragm mounted in the casing, the said tube leading thesoundwaves from one side of the diaphragm, atube mounted at the otherside of the diaphragm and leading the sound-waves therefrom into thesaid second means, and means for removably joining the casing with thesupport, to sustain the casing.

5. A talking-machine, or like instrument having a carriage, meansmounted on the carriage for conducting the sound-waves there from, asupport carried by the carriage, a second means mounted on the supportfor conducting the sound-waves, diaphragm devices mounted to swing onthe carriage, the said'means for conducting the sound-waves leading fromthe respective sides of the diaphragm, and means for removablyconnecting the diaphragm deviceswith the support.

6. The combination, with a talking machine comprising a carriage andatube mounted to swing thereon, of diaphragm devices carried by the tubeand comprising a gravityreproducer, the tube serving to conduct thesound-waves from the one side of the diaphragm, a support mountedindependently of the diaphragm devices, and means for conducting thesound-waves from the other side of the diaphragm, such means being heldby the said support.

7. In a talking-machine, the combination with a carriage and a tubemounted to swing thereon, of a horn mounted on the carriage andcommunicating with the tube, diaphragm devices held by the tube, thetube conducting the sound-waves from the lower side of the diaphragm, asupport mounted on the carriage, a second horn held by the support andserving to conduct the sound-waves from the upper side of the diaphragm,and means for connecting the diaphragm devices and tube with the supportto sustain said devices on the support.

FREDERICK W. NOLT 1.

Witnesses:

ALEC McCARrER, SIDNEY W. SMITH.

